]> git.madduck.net Git - etc/taskwarrior.git/blobdiff - tasklib/tests.py

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

Merge pull request #59 from bergercookie/develop
[etc/taskwarrior.git] / tasklib / tests.py
index be54504a5b69b2368bdabb116dfa215839ab2565..d53fc31e2f425b14df29a044a84e989ab2bca51b 100644 (file)
@@ -12,7 +12,7 @@ import tempfile
 import unittest
 
 from .backends import TaskWarrior
 import unittest
 
 from .backends import TaskWarrior
-from .task import Task, ReadOnlyDictView, TaskQuerySet
+from .task import Task, ReadOnlyDictView
 from .lazy import LazyUUIDTask, LazyUUIDTaskSet
 from .serializing import DATE_FORMAT, local_zone
 
 from .lazy import LazyUUIDTask, LazyUUIDTaskSet
 from .serializing import DATE_FORMAT, local_zone
 
@@ -40,7 +40,9 @@ TASK_STANDARD_ATTRS = (
     'annotations',
 )
 
     'annotations',
 )
 
-total_seconds_2_6 = lambda x: x.microseconds / 1e6 + x.seconds + x.days * 24 * 3600
+
+def total_seconds_2_6(x):
+    return x.microseconds / 1e6 + x.seconds + x.days * 24 * 3600
 
 
 class TasklibTest(unittest.TestCase):
 
 
 class TasklibTest(unittest.TestCase):
@@ -59,43 +61,85 @@ class TaskFilterTest(TasklibTest):
         self.assertEqual(len(self.tw.tasks.all()), 0)
 
     def test_all_non_empty(self):
         self.assertEqual(len(self.tw.tasks.all()), 0)
 
     def test_all_non_empty(self):
-        Task(self.tw, description="test task").save()
+        Task(self.tw, description='test task').save()
         self.assertEqual(len(self.tw.tasks.all()), 1)
         self.assertEqual(self.tw.tasks.all()[0]['description'], 'test task')
         self.assertEqual(self.tw.tasks.all()[0]['status'], 'pending')
 
     def test_pending_non_empty(self):
         self.assertEqual(len(self.tw.tasks.all()), 1)
         self.assertEqual(self.tw.tasks.all()[0]['description'], 'test task')
         self.assertEqual(self.tw.tasks.all()[0]['status'], 'pending')
 
     def test_pending_non_empty(self):
-        Task(self.tw, description="test task").save()
+        Task(self.tw, description='test task').save()
         self.assertEqual(len(self.tw.tasks.pending()), 1)
         self.assertEqual(len(self.tw.tasks.pending()), 1)
-        self.assertEqual(self.tw.tasks.pending()[0]['description'],
-                         'test task')
+        self.assertEqual(
+            self.tw.tasks.pending()[0]['description'],
+            'test task',
+        )
         self.assertEqual(self.tw.tasks.pending()[0]['status'], 'pending')
 
     def test_completed_empty(self):
         self.assertEqual(self.tw.tasks.pending()[0]['status'], 'pending')
 
     def test_completed_empty(self):
-        Task(self.tw, description="test task").save()
+        Task(self.tw, description='test task').save()
         self.assertEqual(len(self.tw.tasks.completed()), 0)
 
     def test_completed_non_empty(self):
         self.assertEqual(len(self.tw.tasks.completed()), 0)
 
     def test_completed_non_empty(self):
-        Task(self.tw, description="test task").save()
+        Task(self.tw, description='test task').save()
         self.assertEqual(len(self.tw.tasks.completed()), 0)
         self.tw.tasks.all()[0].done()
         self.assertEqual(len(self.tw.tasks.completed()), 1)
 
         self.assertEqual(len(self.tw.tasks.completed()), 0)
         self.tw.tasks.all()[0].done()
         self.assertEqual(len(self.tw.tasks.completed()), 1)
 
+    def test_deleted_empty(self):
+        Task(self.tw, description='test task').save()
+        self.assertEqual(len(self.tw.tasks.deleted()), 0)
+
+    def test_deleted_non_empty(self):
+        Task(self.tw, description='test task').save()
+        self.assertEqual(len(self.tw.tasks.deleted()), 0)
+        self.tw.tasks.all()[0].delete()
+        self.assertEqual(len(self.tw.tasks.deleted()), 1)
+
+    def test_waiting_empty(self):
+        Task(self.tw, description='test task').save()
+        self.assertEqual(len(self.tw.tasks.waiting()), 0)
+
+    def test_waiting_non_empty(self):
+        Task(self.tw, description='test task').save()
+        self.assertEqual(len(self.tw.tasks.waiting()), 0)
+
+        t = self.tw.tasks.all()[0]
+        t['wait'] = datetime.datetime.now() + datetime.timedelta(days=1)
+        t.save()
+
+        self.assertEqual(len(self.tw.tasks.waiting()), 1)
+
+    def test_recurring_empty(self):
+        Task(self.tw, description='test task').save()
+        self.assertEqual(len(self.tw.tasks.recurring()), 0)
+
+    def test_recurring_non_empty(self):
+        Task(
+            self.tw,
+            description='test task',
+            recur='daily',
+            due=datetime.datetime.now(),
+        ).save()
+        self.assertEqual(len(self.tw.tasks.recurring()), 1)
+
     def test_filtering_by_attribute(self):
     def test_filtering_by_attribute(self):
-        Task(self.tw, description="no priority task").save()
-        Task(self.tw, priority="H", description="high priority task").save()
+        Task(self.tw, description='no priority task').save()
+        Task(self.tw, priority='H', description='high priority task').save()
         self.assertEqual(len(self.tw.tasks.all()), 2)
 
         # Assert that the correct number of tasks is returned
         self.assertEqual(len(self.tw.tasks.all()), 2)
 
         # Assert that the correct number of tasks is returned
-        self.assertEqual(len(self.tw.tasks.filter(priority="H")), 1)
+        self.assertEqual(len(self.tw.tasks.filter(priority='H')), 1)
 
         # Assert that the correct tasks are returned
 
         # Assert that the correct tasks are returned
-        high_priority_task = self.tw.tasks.get(priority="H")
-        self.assertEqual(high_priority_task['description'], "high priority task")
+        high_priority_task = self.tw.tasks.get(priority='H')
+        self.assertEqual(
+            high_priority_task['description'],
+            'high priority task',
+        )
 
     def test_filtering_by_empty_attribute(self):
 
     def test_filtering_by_empty_attribute(self):
-        Task(self.tw, description="no priority task").save()
-        Task(self.tw, priority="H", description="high priority task").save()
+        Task(self.tw, description='no priority task').save()
+        Task(self.tw, priority='H', description='high priority task').save()
         self.assertEqual(len(self.tw.tasks.all()), 2)
 
         # Assert that the correct number of tasks is returned
         self.assertEqual(len(self.tw.tasks.all()), 2)
 
         # Assert that the correct number of tasks is returned
@@ -103,69 +147,69 @@ class TaskFilterTest(TasklibTest):
 
         # Assert that the correct tasks are returned
         no_priority_task = self.tw.tasks.get(priority=None)
 
         # Assert that the correct tasks are returned
         no_priority_task = self.tw.tasks.get(priority=None)
-        self.assertEqual(no_priority_task['description'], "no priority task")
+        self.assertEqual(no_priority_task['description'], 'no priority task')
 
     def test_filter_for_task_with_space_in_descripition(self):
 
     def test_filter_for_task_with_space_in_descripition(self):
-        task = Task(self.tw, description="test task")
+        task = Task(self.tw, description='test task')
         task.save()
 
         task.save()
 
-        filtered_task = self.tw.tasks.get(description="test task")
-        self.assertEqual(filtered_task['description'], "test task")
+        filtered_task = self.tw.tasks.get(description='test task')
+        self.assertEqual(filtered_task['description'], 'test task')
 
     def test_filter_for_task_without_space_in_descripition(self):
 
     def test_filter_for_task_without_space_in_descripition(self):
-        task = Task(self.tw, description="test")
+        task = Task(self.tw, description='test')
         task.save()
 
         task.save()
 
-        filtered_task = self.tw.tasks.get(description="test")
-        self.assertEqual(filtered_task['description'], "test")
+        filtered_task = self.tw.tasks.get(description='test')
+        self.assertEqual(filtered_task['description'], 'test')
 
     def test_filter_for_task_with_space_in_project(self):
 
     def test_filter_for_task_with_space_in_project(self):
-        task = Task(self.tw, description="test", project="random project")
+        task = Task(self.tw, description='test', project='random project')
         task.save()
 
         task.save()
 
-        filtered_task = self.tw.tasks.get(project="random project")
-        self.assertEqual(filtered_task['project'], "random project")
+        filtered_task = self.tw.tasks.get(project='random project')
+        self.assertEqual(filtered_task['project'], 'random project')
 
     def test_filter_for_task_without_space_in_project(self):
 
     def test_filter_for_task_without_space_in_project(self):
-        task = Task(self.tw, description="test", project="random")
+        task = Task(self.tw, description='test', project='random')
         task.save()
 
         task.save()
 
-        filtered_task = self.tw.tasks.get(project="random")
-        self.assertEqual(filtered_task['project'], "random")
+        filtered_task = self.tw.tasks.get(project='random')
+        self.assertEqual(filtered_task['project'], 'random')
 
     def test_filter_with_empty_uuid(self):
         self.assertRaises(ValueError, lambda: self.tw.tasks.get(uuid=''))
 
     def test_filter_dummy_by_status(self):
 
     def test_filter_with_empty_uuid(self):
         self.assertRaises(ValueError, lambda: self.tw.tasks.get(uuid=''))
 
     def test_filter_dummy_by_status(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         tasks = self.tw.tasks.filter(status=t['status'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_uuid(self):
         t.save()
 
         tasks = self.tw.tasks.filter(status=t['status'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_uuid(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         tasks = self.tw.tasks.filter(uuid=t['uuid'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_entry(self):
         t.save()
 
         tasks = self.tw.tasks.filter(uuid=t['uuid'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_entry(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         tasks = self.tw.tasks.filter(entry=t['entry'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_description(self):
         t.save()
 
         tasks = self.tw.tasks.filter(entry=t['entry'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_description(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         tasks = self.tw.tasks.filter(description=t['description'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_start(self):
         t.save()
 
         tasks = self.tw.tasks.filter(description=t['description'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_start(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
         t.start()
 
         t.save()
         t.start()
 
@@ -173,7 +217,7 @@ class TaskFilterTest(TasklibTest):
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_end(self):
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_end(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
         t.done()
 
         t.save()
         t.done()
 
@@ -181,14 +225,14 @@ class TaskFilterTest(TasklibTest):
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_due(self):
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_due(self):
-        t = Task(self.tw, description="test", due=datetime.datetime.now())
+        t = Task(self.tw, description='test', due=datetime.datetime.now())
         t.save()
 
         tasks = self.tw.tasks.filter(due=t['due'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_until(self):
         t.save()
 
         tasks = self.tw.tasks.filter(due=t['due'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_until(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         tasks = self.tw.tasks.filter(until=t['until'])
         t.save()
 
         tasks = self.tw.tasks.filter(until=t['until'])
@@ -205,35 +249,35 @@ class TaskFilterTest(TasklibTest):
             else:
                 return
 
             else:
                 return
 
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         tasks = self.tw.tasks.filter(modified=t['modified'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_scheduled(self):
         t.save()
 
         tasks = self.tw.tasks.filter(modified=t['modified'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_scheduled(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         tasks = self.tw.tasks.filter(scheduled=t['scheduled'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_tags(self):
         t.save()
 
         tasks = self.tw.tasks.filter(scheduled=t['scheduled'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_tags(self):
-        t = Task(self.tw, description="test", tags=["home"])
+        t = Task(self.tw, description='test', tags=['home'])
         t.save()
 
         tasks = self.tw.tasks.filter(tags=t['tags'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_projects(self):
         t.save()
 
         tasks = self.tw.tasks.filter(tags=t['tags'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_dummy_by_projects(self):
-        t = Task(self.tw, description="test", project="random")
+        t = Task(self.tw, description='test', project='random')
         t.save()
 
         tasks = self.tw.tasks.filter(project=t['project'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_by_priority(self):
         t.save()
 
         tasks = self.tw.tasks.filter(project=t['project'])
         self.assertEqual(list(tasks), [t])
 
     def test_filter_by_priority(self):
-        t = Task(self.tw, description="test", priority="H")
+        t = Task(self.tw, description='test', priority='H')
         t.save()
 
         tasks = self.tw.tasks.filter(priority=t['priority'])
         t.save()
 
         tasks = self.tw.tasks.filter(priority=t['priority'])
@@ -244,71 +288,83 @@ class TaskTest(TasklibTest):
 
     def test_create_unsaved_task(self):
         # Make sure a new task is not saved unless explicitly called for
 
     def test_create_unsaved_task(self):
         # Make sure a new task is not saved unless explicitly called for
-        t = Task(self.tw, description="test task")
+        Task(self.tw, description='test task')
         self.assertEqual(len(self.tw.tasks.all()), 0)
 
         self.assertEqual(len(self.tw.tasks.all()), 0)
 
-    # TODO: once python 2.6 compatiblity is over, use context managers here
+    # TODO: once python 2.6 compatibility is over, use context managers here
     #       and in all subsequent tests for assertRaises
 
     def test_delete_unsaved_task(self):
     #       and in all subsequent tests for assertRaises
 
     def test_delete_unsaved_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         self.assertRaises(Task.NotSaved, t.delete)
 
     def test_complete_unsaved_task(self):
         self.assertRaises(Task.NotSaved, t.delete)
 
     def test_complete_unsaved_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         self.assertRaises(Task.NotSaved, t.done)
 
     def test_refresh_unsaved_task(self):
         self.assertRaises(Task.NotSaved, t.done)
 
     def test_refresh_unsaved_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         self.assertRaises(Task.NotSaved, t.refresh)
 
     def test_start_unsaved_task(self):
         self.assertRaises(Task.NotSaved, t.refresh)
 
     def test_start_unsaved_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         self.assertRaises(Task.NotSaved, t.start)
 
     def test_delete_deleted_task(self):
         self.assertRaises(Task.NotSaved, t.start)
 
     def test_delete_deleted_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.delete()
 
         self.assertRaises(Task.DeletedTask, t.delete)
 
     def test_complete_completed_task(self):
         t.save()
         t.delete()
 
         self.assertRaises(Task.DeletedTask, t.delete)
 
     def test_complete_completed_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.done()
 
         self.assertRaises(Task.CompletedTask, t.done)
 
     def test_start_completed_task(self):
         t.save()
         t.done()
 
         self.assertRaises(Task.CompletedTask, t.done)
 
     def test_start_completed_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.done()
 
         self.assertRaises(Task.CompletedTask, t.start)
 
     def test_add_completed_task(self):
         t.save()
         t.done()
 
         self.assertRaises(Task.CompletedTask, t.start)
 
     def test_add_completed_task(self):
-        t = Task(self.tw, description="test", status="completed",
-                 end=datetime.datetime.now())
+        t = Task(
+            self.tw,
+            description='test',
+            status='completed',
+            end=datetime.datetime.now(),
+        )
         t.save()
 
     def test_add_multiple_completed_tasks(self):
         t.save()
 
     def test_add_multiple_completed_tasks(self):
-        t1 = Task(self.tw, description="test1", status="completed",
-                 end=datetime.datetime.now())
-        t2 = Task(self.tw, description="test2", status="completed",
-                 end=datetime.datetime.now())
+        t1 = Task(
+            self.tw,
+            description='test1',
+            status='completed',
+            end=datetime.datetime.now(),
+        )
+        t2 = Task(
+            self.tw,
+            description='test2',
+            status='completed',
+            end=datetime.datetime.now(),
+        )
         t1.save()
         t2.save()
 
     def test_complete_deleted_task(self):
         t1.save()
         t2.save()
 
     def test_complete_deleted_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.delete()
 
         self.assertRaises(Task.DeletedTask, t.done)
 
     def test_starting_task(self):
         t.save()
         t.delete()
 
         self.assertRaises(Task.DeletedTask, t.done)
 
     def test_starting_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         now = t.datetime_normalizer(datetime.datetime.now())
         t.save()
         t.start()
         now = t.datetime_normalizer(datetime.datetime.now())
         t.save()
         t.start()
@@ -317,7 +373,7 @@ class TaskTest(TasklibTest):
         self.assertEqual(t['status'], 'pending')
 
     def test_completing_task(self):
         self.assertEqual(t['status'], 'pending')
 
     def test_completing_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         now = t.datetime_normalizer(datetime.datetime.now())
         t.save()
         t.done()
         now = t.datetime_normalizer(datetime.datetime.now())
         t.save()
         t.done()
@@ -326,7 +382,7 @@ class TaskTest(TasklibTest):
         self.assertEqual(t['status'], 'completed')
 
     def test_deleting_task(self):
         self.assertEqual(t['status'], 'completed')
 
     def test_deleting_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         now = t.datetime_normalizer(datetime.datetime.now())
         t.save()
         t.delete()
         now = t.datetime_normalizer(datetime.datetime.now())
         t.save()
         t.delete()
@@ -335,51 +391,51 @@ class TaskTest(TasklibTest):
         self.assertEqual(t['status'], 'deleted')
 
     def test_started_task_active(self):
         self.assertEqual(t['status'], 'deleted')
 
     def test_started_task_active(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.start()
         self.assertTrue(t.active)
 
     def test_unstarted_task_inactive(self):
         t.save()
         t.start()
         self.assertTrue(t.active)
 
     def test_unstarted_task_inactive(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         self.assertFalse(t.active)
         t.save()
         self.assertFalse(t.active)
 
     def test_start_active_task(self):
         self.assertFalse(t.active)
         t.save()
         self.assertFalse(t.active)
 
     def test_start_active_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.start()
         self.assertRaises(Task.ActiveTask, t.start)
 
     def test_stop_completed_task(self):
         t.save()
         t.start()
         self.assertRaises(Task.ActiveTask, t.start)
 
     def test_stop_completed_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.start()
         t.done()
 
         self.assertRaises(Task.InactiveTask, t.stop)
 
         t.save()
         t.start()
         t.done()
 
         self.assertRaises(Task.InactiveTask, t.stop)
 
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.done()
 
         self.assertRaises(Task.InactiveTask, t.stop)
 
     def test_stop_deleted_task(self):
         t.save()
         t.done()
 
         self.assertRaises(Task.InactiveTask, t.stop)
 
     def test_stop_deleted_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.start()
         t.delete()
         t.stop()
 
     def test_stop_inactive_task(self):
         t.save()
         t.start()
         t.delete()
         t.stop()
 
     def test_stop_inactive_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
 
         self.assertRaises(Task.InactiveTask, t.stop)
 
         t.save()
 
         self.assertRaises(Task.InactiveTask, t.stop)
 
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.start()
         t.stop()
         t.save()
         t.start()
         t.stop()
@@ -387,8 +443,8 @@ class TaskTest(TasklibTest):
         self.assertRaises(Task.InactiveTask, t.stop)
 
     def test_stopping_task(self):
         self.assertRaises(Task.InactiveTask, t.stop)
 
     def test_stopping_task(self):
-        t = Task(self.tw, description="test task")
-        now = t.datetime_normalizer(datetime.datetime.now())
+        t = Task(self.tw, description='test task')
+        t.datetime_normalizer(datetime.datetime.now())
         t.save()
         t.start()
         t.stop()
         t.save()
         t.start()
         t.stop()
@@ -398,41 +454,41 @@ class TaskTest(TasklibTest):
         self.assertFalse(t.active)
 
     def test_modify_simple_attribute_without_space(self):
         self.assertFalse(t.active)
 
     def test_modify_simple_attribute_without_space(self):
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         t.save()
 
-        self.assertEquals(t['description'], "test")
+        self.assertEqual(t['description'], 'test')
 
 
-        t['description'] = "test-modified"
+        t['description'] = 'test-modified'
         t.save()
 
         t.save()
 
-        self.assertEquals(t['description'], "test-modified")
+        self.assertEqual(t['description'], 'test-modified')
 
     def test_modify_simple_attribute_with_space(self):
         # Space can pose problems with parsing
 
     def test_modify_simple_attribute_with_space(self):
         # Space can pose problems with parsing
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
 
         t.save()
 
-        self.assertEquals(t['description'], "test task")
+        self.assertEqual(t['description'], 'test task')
 
 
-        t['description'] = "test task modified"
+        t['description'] = 'test task modified'
         t.save()
 
         t.save()
 
-        self.assertEquals(t['description'], "test task modified")
+        self.assertEqual(t['description'], 'test task modified')
 
     def test_empty_dependency_set_of_unsaved_task(self):
 
     def test_empty_dependency_set_of_unsaved_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         self.assertEqual(t['depends'], set())
 
     def test_empty_dependency_set_of_saved_task(self):
         self.assertEqual(t['depends'], set())
 
     def test_empty_dependency_set_of_saved_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         self.assertEqual(t['depends'], set())
 
     def test_set_unsaved_task_as_dependency(self):
         # Adds only one dependency to task with no dependencies
         t.save()
         self.assertEqual(t['depends'], set())
 
     def test_set_unsaved_task_as_dependency(self):
         # Adds only one dependency to task with no dependencies
-        t = Task(self.tw, description="test task")
-        dependency = Task(self.tw, description="needs to be done first")
+        t = Task(self.tw, description='test task')
+        dependency = Task(self.tw, description='needs to be done first')
 
         # We only save the parent task, dependency task is unsaved
         t.save()
 
         # We only save the parent task, dependency task is unsaved
         t.save()
@@ -442,8 +498,8 @@ class TaskTest(TasklibTest):
 
     def test_set_simple_dependency_set(self):
         # Adds only one dependency to task with no dependencies
 
     def test_set_simple_dependency_set(self):
         # Adds only one dependency to task with no dependencies
-        t = Task(self.tw, description="test task")
-        dependency = Task(self.tw, description="needs to be done first")
+        t = Task(self.tw, description='test task')
+        dependency = Task(self.tw, description='needs to be done first')
 
         t.save()
         dependency.save()
 
         t.save()
         dependency.save()
@@ -454,9 +510,9 @@ class TaskTest(TasklibTest):
 
     def test_set_complex_dependency_set(self):
         # Adds two dependencies to task with no dependencies
 
     def test_set_complex_dependency_set(self):
         # Adds two dependencies to task with no dependencies
-        t = Task(self.tw, description="test task")
-        dependency1 = Task(self.tw, description="needs to be done first")
-        dependency2 = Task(self.tw, description="needs to be done second")
+        t = Task(self.tw, description='test task')
+        dependency1 = Task(self.tw, description='needs to be done first')
+        dependency2 = Task(self.tw, description='needs to be done second')
 
         t.save()
         dependency1.save()
 
         t.save()
         dependency1.save()
@@ -468,9 +524,9 @@ class TaskTest(TasklibTest):
 
     def test_remove_from_dependency_set(self):
         # Removes dependency from task with two dependencies
 
     def test_remove_from_dependency_set(self):
         # Removes dependency from task with two dependencies
-        t = Task(self.tw, description="test task")
-        dependency1 = Task(self.tw, description="needs to be done first")
-        dependency2 = Task(self.tw, description="needs to be done second")
+        t = Task(self.tw, description='test task')
+        dependency1 = Task(self.tw, description='needs to be done first')
+        dependency2 = Task(self.tw, description='needs to be done second')
 
         dependency1.save()
         dependency2.save()
 
         dependency1.save()
         dependency2.save()
@@ -485,9 +541,9 @@ class TaskTest(TasklibTest):
 
     def test_add_to_dependency_set(self):
         # Adds dependency to task with one dependencies
 
     def test_add_to_dependency_set(self):
         # Adds dependency to task with one dependencies
-        t = Task(self.tw, description="test task")
-        dependency1 = Task(self.tw, description="needs to be done first")
-        dependency2 = Task(self.tw, description="needs to be done second")
+        t = Task(self.tw, description='test task')
+        dependency1 = Task(self.tw, description='needs to be done first')
+        dependency2 = Task(self.tw, description='needs to be done second')
 
         dependency1.save()
         dependency2.save()
 
         dependency1.save()
         dependency2.save()
@@ -502,8 +558,8 @@ class TaskTest(TasklibTest):
 
     def test_add_to_empty_dependency_set(self):
         # Adds dependency to task with one dependencies
 
     def test_add_to_empty_dependency_set(self):
         # Adds dependency to task with one dependencies
-        t = Task(self.tw, description="test task")
-        dependency = Task(self.tw, description="needs to be done first")
+        t = Task(self.tw, description='test task')
+        dependency = Task(self.tw, description='needs to be done first')
 
         dependency.save()
 
 
         dependency.save()
 
@@ -514,30 +570,30 @@ class TaskTest(TasklibTest):
 
     def test_simple_dependency_set_save_repeatedly(self):
         # Adds only one dependency to task with no dependencies
 
     def test_simple_dependency_set_save_repeatedly(self):
         # Adds only one dependency to task with no dependencies
-        t = Task(self.tw, description="test task")
-        dependency = Task(self.tw, description="needs to be done first")
+        t = Task(self.tw, description='test task')
+        dependency = Task(self.tw, description='needs to be done first')
         dependency.save()
 
         t['depends'] = set([dependency])
         t.save()
 
         # We taint the task, but keep depends intact
         dependency.save()
 
         t['depends'] = set([dependency])
         t.save()
 
         # We taint the task, but keep depends intact
-        t['description'] = "test task modified"
+        t['description'] = 'test task modified'
         t.save()
 
         self.assertEqual(t['depends'], set([dependency]))
 
         # We taint the task, but assign the same set to the depends
         t['depends'] = set([dependency])
         t.save()
 
         self.assertEqual(t['depends'], set([dependency]))
 
         # We taint the task, but assign the same set to the depends
         t['depends'] = set([dependency])
-        t['description'] = "test task modified again"
+        t['description'] = 'test task modified again'
         t.save()
 
         self.assertEqual(t['depends'], set([dependency]))
 
     def test_compare_different_tasks(self):
         # Negative: compare two different tasks
         t.save()
 
         self.assertEqual(t['depends'], set([dependency]))
 
     def test_compare_different_tasks(self):
         # Negative: compare two different tasks
-        t1 = Task(self.tw, description="test task")
-        t2 = Task(self.tw, description="test task")
+        t1 = Task(self.tw, description='test task')
+        t2 = Task(self.tw, description='test task')
 
         t1.save()
         t2.save()
 
         t1.save()
         t2.save()
@@ -546,14 +602,14 @@ class TaskTest(TasklibTest):
 
     def test_compare_same_task_object(self):
         # Compare Task object wit itself
 
     def test_compare_same_task_object(self):
         # Compare Task object wit itself
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
 
         self.assertEqual(t == t, True)
 
     def test_compare_same_task(self):
         # Compare the same task using two different objects
         t.save()
 
         self.assertEqual(t == t, True)
 
     def test_compare_same_task(self):
         # Compare the same task using two different objects
-        t1 = Task(self.tw, description="test task")
+        t1 = Task(self.tw, description='test task')
         t1.save()
 
         t2 = self.tw.tasks.get(uuid=t1['uuid'])
         t1.save()
 
         t2 = self.tw.tasks.get(uuid=t1['uuid'])
@@ -562,31 +618,48 @@ class TaskTest(TasklibTest):
     def test_compare_unsaved_tasks(self):
         # t1 and t2 are unsaved tasks, considered to be unequal
         # despite the content of data
     def test_compare_unsaved_tasks(self):
         # t1 and t2 are unsaved tasks, considered to be unequal
         # despite the content of data
-        t1 = Task(self.tw, description="test task")
-        t2 = Task(self.tw, description="test task")
+        t1 = Task(self.tw, description='test task')
+        t2 = Task(self.tw, description='test task')
 
         self.assertEqual(t1 == t2, False)
 
     def test_hash_unsaved_tasks(self):
         # Considered equal, it's the same object
 
         self.assertEqual(t1 == t2, False)
 
     def test_hash_unsaved_tasks(self):
         # Considered equal, it's the same object
-        t1 = Task(self.tw, description="test task")
+        t1 = Task(self.tw, description='test task')
         t2 = t1
         self.assertEqual(hash(t1) == hash(t2), True)
 
     def test_hash_same_task(self):
         # Compare the hash of the task using two different objects
         t2 = t1
         self.assertEqual(hash(t1) == hash(t2), True)
 
     def test_hash_same_task(self):
         # Compare the hash of the task using two different objects
-        t1 = Task(self.tw, description="test task")
+        t1 = Task(self.tw, description='test task')
         t1.save()
 
         t2 = self.tw.tasks.get(uuid=t1['uuid'])
         self.assertEqual(t1.__hash__(), t2.__hash__())
 
         t1.save()
 
         t2 = self.tw.tasks.get(uuid=t1['uuid'])
         self.assertEqual(t1.__hash__(), t2.__hash__())
 
+    def test_hash_unequal_unsaved_tasks(self):
+        # Compare the hash of the task using two different objects
+        t1 = Task(self.tw, description='test task 1')
+        t2 = Task(self.tw, description='test task 2')
+
+        self.assertNotEqual(t1.__hash__(), t2.__hash__())
+
+    def test_hash_unequal_saved_tasks(self):
+        # Compare the hash of the task using two different objects
+        t1 = Task(self.tw, description='test task 1')
+        t2 = Task(self.tw, description='test task 2')
+
+        t1.save()
+        t2.save()
+
+        self.assertNotEqual(t1.__hash__(), t2.__hash__())
+
     def test_adding_task_with_priority(self):
     def test_adding_task_with_priority(self):
-        t = Task(self.tw, description="test task", priority="M")
+        t = Task(self.tw, description='test task', priority='M')
         t.save()
 
     def test_removing_priority_with_none(self):
         t.save()
 
     def test_removing_priority_with_none(self):
-        t = Task(self.tw, description="test task", priority="L")
+        t = Task(self.tw, description='test task', priority='L')
         t.save()
 
         # Remove the priority mark
         t.save()
 
         # Remove the priority mark
@@ -597,11 +670,11 @@ class TaskTest(TasklibTest):
         self.assertEqual(t['priority'], None)
 
     def test_adding_task_with_due_time(self):
         self.assertEqual(t['priority'], None)
 
     def test_adding_task_with_due_time(self):
-        t = Task(self.tw, description="test task", due=datetime.datetime.now())
+        t = Task(self.tw, description='test task', due=datetime.datetime.now())
         t.save()
 
     def test_removing_due_time_with_none(self):
         t.save()
 
     def test_removing_due_time_with_none(self):
-        t = Task(self.tw, description="test task", due=datetime.datetime.now())
+        t = Task(self.tw, description='test task', due=datetime.datetime.now())
         t.save()
 
         # Remove the due timestamp
         t.save()
 
         # Remove the due timestamp
@@ -618,15 +691,17 @@ class TaskTest(TasklibTest):
         self.assertEqual(set(t._modified_fields), set())
 
         # Modify the task
         self.assertEqual(set(t._modified_fields), set())
 
         # Modify the task
-        t['description'] = "test task"
+        t['description'] = 'test task'
         self.assertEqual(set(t._modified_fields), set(['description']))
 
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
         self.assertEqual(set(t._modified_fields), set(['description', 'due']))
 
         self.assertEqual(set(t._modified_fields), set(['description']))
 
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
         self.assertEqual(set(t._modified_fields), set(['description', 'due']))
 
-        t['project'] = "test project"
-        self.assertEqual(set(t._modified_fields),
-                         set(['description', 'due', 'project']))
+        t['project'] = 'test project'
+        self.assertEqual(
+            set(t._modified_fields),
+            set(['description', 'due', 'project']),
+        )
 
         # List of modified fields should clear out when saved
         t.save()
 
         # List of modified fields should clear out when saved
         t.save()
@@ -634,20 +709,20 @@ class TaskTest(TasklibTest):
 
         # Reassigning the fields with the same values now should not produce
         # modified fields
 
         # Reassigning the fields with the same values now should not produce
         # modified fields
-        t['description'] = "test task"
+        t['description'] = 'test task'
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
-        t['project'] = "test project"
+        t['project'] = 'test project'
         self.assertEqual(set(t._modified_fields), set())
 
     def test_modified_fields_loaded_task(self):
         t = Task(self.tw)
 
         # Modify the task
         self.assertEqual(set(t._modified_fields), set())
 
     def test_modified_fields_loaded_task(self):
         t = Task(self.tw)
 
         # Modify the task
-        t['description'] = "test task"
+        t['description'] = 'test task'
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
-        t['project'] = "test project"
+        t['project'] = 'test project'
 
 
-        dependency = Task(self.tw, description="dependency")
+        dependency = Task(self.tw, description='dependency')
         dependency.save()
         t['depends'] = set([dependency])
 
         dependency.save()
         t['depends'] = set([dependency])
 
@@ -656,13 +731,13 @@ class TaskTest(TasklibTest):
         self.assertEqual(set(t._modified_fields), set())
 
         # Get the task by using a filter by UUID
         self.assertEqual(set(t._modified_fields), set())
 
         # Get the task by using a filter by UUID
-        t2 = self.tw.tasks.get(uuid=t['uuid'])
+        self.tw.tasks.get(uuid=t['uuid'])
 
         # Reassigning the fields with the same values now should not produce
         # modified fields
 
         # Reassigning the fields with the same values now should not produce
         # modified fields
-        t['description'] = "test task"
+        t['description'] = 'test task'
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
         t['due'] = datetime.datetime(2014, 2, 14, 14, 14, 14)  # <3
-        t['project'] = "test project"
+        t['project'] = 'test project'
         t['depends'] = set([dependency])
         self.assertEqual(set(t._modified_fields), set())
 
         t['depends'] = set([dependency])
         self.assertEqual(set(t._modified_fields), set())
 
@@ -670,7 +745,7 @@ class TaskTest(TasklibTest):
         t = Task(self.tw)
 
         for field in TASK_STANDARD_ATTRS:
         t = Task(self.tw)
 
         for field in TASK_STANDARD_ATTRS:
-            value = t[field]
+            t[field]
 
         self.assertEqual(set(t._modified_fields), set())
 
 
         self.assertEqual(set(t._modified_fields), set())
 
@@ -678,30 +753,34 @@ class TaskTest(TasklibTest):
         # Test that we are unable to set readonly attrs through __init__
         for readonly_key in Task.read_only_fields:
             kwargs = {'description': 'test task', readonly_key: 'value'}
         # Test that we are unable to set readonly attrs through __init__
         for readonly_key in Task.read_only_fields:
             kwargs = {'description': 'test task', readonly_key: 'value'}
-            self.assertRaises(RuntimeError,
-                              lambda: Task(self.tw, **kwargs))
+            self.assertRaises(
+                RuntimeError,
+                lambda: Task(self.tw, **kwargs),
+            )
 
     def test_setting_read_only_attrs_through_setitem(self):
         # Test that we are unable to set readonly attrs through __init__
         for readonly_key in Task.read_only_fields:
             t = Task(self.tw, description='test task')
 
     def test_setting_read_only_attrs_through_setitem(self):
         # Test that we are unable to set readonly attrs through __init__
         for readonly_key in Task.read_only_fields:
             t = Task(self.tw, description='test task')
-            self.assertRaises(RuntimeError,
-                              lambda: t.__setitem__(readonly_key, 'value'))
+            self.assertRaises(
+                RuntimeError,
+                lambda: t.__setitem__(readonly_key, 'value'),
+            )
 
     def test_saving_unmodified_task(self):
 
     def test_saving_unmodified_task(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t.save()
 
     def test_adding_tag_by_appending(self):
         t.save()
         t.save()
 
     def test_adding_tag_by_appending(self):
-        t = Task(self.tw, description="test task", tags=['test1'])
+        t = Task(self.tw, description='test task', tags=['test1'])
         t.save()
         t['tags'].add('test2')
         t.save()
         self.assertEqual(t['tags'], set(['test1', 'test2']))
 
     def test_adding_tag_twice(self):
         t.save()
         t['tags'].add('test2')
         t.save()
         self.assertEqual(t['tags'], set(['test1', 'test2']))
 
     def test_adding_tag_twice(self):
-        t = Task(self.tw, description="test task", tags=['test1'])
+        t = Task(self.tw, description='test task', tags=['test1'])
         t.save()
         t['tags'].add('test2')
         t['tags'].add('test2')
         t.save()
         t['tags'].add('test2')
         t['tags'].add('test2')
@@ -709,7 +788,7 @@ class TaskTest(TasklibTest):
         self.assertEqual(t['tags'], set(['test1', 'test2']))
 
     def test_adding_tag_by_appending_empty(self):
         self.assertEqual(t['tags'], set(['test1', 'test2']))
 
     def test_adding_tag_by_appending_empty(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t.save()
         t['tags'].add('test')
         t.save()
         t.save()
         t['tags'].add('test')
         t.save()
@@ -718,16 +797,26 @@ class TaskTest(TasklibTest):
     def test_serializers_returning_empty_string_for_none(self):
         # Test that any serializer returns '' when passed None
         t = Task(self.tw)
     def test_serializers_returning_empty_string_for_none(self):
         # Test that any serializer returns '' when passed None
         t = Task(self.tw)
-        serializers = [getattr(t, serializer_name) for serializer_name in
-                       filter(lambda x: x.startswith('serialize_'), dir(t))]
+        serializers = [
+            getattr(t, serializer_name)
+            for serializer_name in filter(
+                lambda x: x.startswith('serialize_'),
+                dir(t),
+            )
+        ]
         for serializer in serializers:
             self.assertEqual(serializer(None), '')
 
     def test_deserializer_returning_empty_value_for_empty_string(self):
         # Test that any deserializer returns empty value when passed ''
         t = Task(self.tw)
         for serializer in serializers:
             self.assertEqual(serializer(None), '')
 
     def test_deserializer_returning_empty_value_for_empty_string(self):
         # Test that any deserializer returns empty value when passed ''
         t = Task(self.tw)
-        deserializers = [getattr(t, deserializer_name) for deserializer_name in
-                        filter(lambda x: x.startswith('deserialize_'), dir(t))]
+        deserializers = [
+            getattr(t, deserializer_name)
+            for deserializer_name in filter(
+                lambda x: x.startswith('deserialize_'),
+                dir(t),
+            )
+        ]
         for deserializer in deserializers:
             self.assertTrue(deserializer('') in (None, [], set()))
 
         for deserializer in deserializers:
             self.assertTrue(deserializer('') in (None, [], set()))
 
@@ -740,15 +829,23 @@ class TaskTest(TasklibTest):
 
     def test_recurrent_task_generation(self):
         today = datetime.date.today()
 
     def test_recurrent_task_generation(self):
         today = datetime.date.today()
-        t = Task(self.tw, description="brush teeth",
-                 due=today, recur="daily")
+        t = Task(
+            self.tw,
+            description='brush teeth',
+            due=today,
+            recur='daily',
+        )
         t.save()
         self.assertEqual(len(self.tw.tasks.pending()), 2)
 
     def test_spawned_task_parent(self):
         today = datetime.date.today()
         t.save()
         self.assertEqual(len(self.tw.tasks.pending()), 2)
 
     def test_spawned_task_parent(self):
         today = datetime.date.today()
-        t = Task(self.tw, description="brush teeth",
-                 due=today, recur="daily")
+        t = Task(
+            self.tw,
+            description='brush teeth',
+            due=today,
+            recur='daily',
+        )
         t.save()
 
         spawned = self.tw.tasks.pending().get(due=today)
         t.save()
 
         spawned = self.tw.tasks.pending().get(due=today)
@@ -756,19 +853,22 @@ class TaskTest(TasklibTest):
 
     def test_modify_number_of_tasks_at_once(self):
         for i in range(1, 100):
 
     def test_modify_number_of_tasks_at_once(self):
         for i in range(1, 100):
-            Task(self.tw, description="test task %d" % i, tags=['test']).save()
+            Task(self.tw, description='test task %d' % i, tags=['test']).save()
 
         self.tw.execute_command(['+test', 'mod', 'unified', 'description'])
 
     def test_return_all_from_executed_command(self):
 
         self.tw.execute_command(['+test', 'mod', 'unified', 'description'])
 
     def test_return_all_from_executed_command(self):
-        Task(self.tw, description="test task", tags=['test']).save()
+        Task(self.tw, description='test task', tags=['test']).save()
         out, err, rc = self.tw.execute_command(['count'], return_all=True)
         self.assertEqual(rc, 0)
 
     def test_return_all_from_failed_executed_command(self):
         out, err, rc = self.tw.execute_command(['count'], return_all=True)
         self.assertEqual(rc, 0)
 
     def test_return_all_from_failed_executed_command(self):
-        Task(self.tw, description="test task", tags=['test']).save()
-        out, err, rc = self.tw.execute_command(['countinvalid'],
-            return_all=True, allow_failure=False)
+        Task(self.tw, description='test task', tags=['test']).save()
+        out, err, rc = self.tw.execute_command(
+            ['countinvalid'],
+            return_all=True,
+            allow_failure=False,
+        )
         self.assertNotEqual(rc, 0)
 
 
         self.assertNotEqual(rc, 0)
 
 
@@ -779,7 +879,8 @@ class TaskFromHookTest(TasklibTest):
         '"entry":"20141118T050231Z",'
         '"status":"pending",'
         '"start":"20141119T152233Z",'
         '"entry":"20141118T050231Z",'
         '"status":"pending",'
         '"start":"20141119T152233Z",'
-        '"uuid":"a360fc44-315c-4366-b70c-ea7e7520b749"}')
+        '"uuid":"a360fc44-315c-4366-b70c-ea7e7520b749"}',
+    )
 
     input_add_data_recurring = six.StringIO(
         '{"description":"Mow the lawn",'
 
     input_add_data_recurring = six.StringIO(
         '{"description":"Mow the lawn",'
@@ -787,46 +888,65 @@ class TaskFromHookTest(TasklibTest):
         '"parent":"62da6227-519c-42c2-915d-dccada926ad7",'
         '"recur":"weekly",'
         '"status":"pending",'
         '"parent":"62da6227-519c-42c2-915d-dccada926ad7",'
         '"recur":"weekly",'
         '"status":"pending",'
-        '"uuid":"81305335-0237-49ff-8e87-b3cdc2369cec"}')
-
-    input_modify_data = six.StringIO(input_add_data.getvalue() + '\n' +
-        '{"description":"Buy some milk finally",'
-        '"entry":"20141118T050231Z",'
-        '"status":"completed",'
-        '"uuid":"a360fc44-315c-4366-b70c-ea7e7520b749"}')
+        '"uuid":"81305335-0237-49ff-8e87-b3cdc2369cec"}',
+    )
+
+    input_modify_data = six.StringIO(
+        '\n'.join([
+            input_add_data.getvalue(),
+            (
+                '{"description":"Buy some milk finally",'
+                '"entry":"20141118T050231Z",'
+                '"status":"completed",'
+                '"uuid":"a360fc44-315c-4366-b70c-ea7e7520b749"}'
+            ),
+        ]),
+    )
 
     exported_raw_data = (
         '{"project":"Home",'
 
     exported_raw_data = (
         '{"project":"Home",'
-         '"due":"20150101T232323Z",'
-         '"description":"test task"}')
+        '"due":"20150101T232323Z",'
+        '"description":"test task"}'
+    )
 
     def test_setting_up_from_add_hook_input(self):
         t = Task.from_input(input_file=self.input_add_data, backend=self.tw)
 
     def test_setting_up_from_add_hook_input(self):
         t = Task.from_input(input_file=self.input_add_data, backend=self.tw)
-        self.assertEqual(t['description'], "Buy some milk")
+        self.assertEqual(t['description'], 'Buy some milk')
         self.assertEqual(t.pending, True)
 
     def test_setting_up_from_add_hook_input_recurring(self):
         self.assertEqual(t.pending, True)
 
     def test_setting_up_from_add_hook_input_recurring(self):
-        t = Task.from_input(input_file=self.input_add_data_recurring,
-                            backend=self.tw)
-        self.assertEqual(t['description'], "Mow the lawn")
+        t = Task.from_input(
+            input_file=self.input_add_data_recurring,
+            backend=self.tw,
+        )
+        self.assertEqual(t['description'], 'Mow the lawn')
         self.assertEqual(t.pending, True)
 
     def test_setting_up_from_modified_hook_input(self):
         self.assertEqual(t.pending, True)
 
     def test_setting_up_from_modified_hook_input(self):
-        t = Task.from_input(input_file=self.input_modify_data, modify=True,
-                            backend=self.tw)
-        self.assertEqual(t['description'], "Buy some milk finally")
+        t = Task.from_input(
+            input_file=self.input_modify_data,
+            modify=True,
+            backend=self.tw,
+        )
+        self.assertEqual(t['description'], 'Buy some milk finally')
         self.assertEqual(t.pending, False)
         self.assertEqual(t.completed, True)
 
         self.assertEqual(t.pending, False)
         self.assertEqual(t.completed, True)
 
-        self.assertEqual(t._original_data['status'], "pending")
-        self.assertEqual(t._original_data['description'], "Buy some milk")
-        self.assertEqual(set(t._modified_fields),
-                         set(['status', 'description', 'start']))
+        self.assertEqual(t._original_data['status'], 'pending')
+        self.assertEqual(t._original_data['description'], 'Buy some milk')
+        self.assertEqual(
+            set(t._modified_fields),
+            set(['status', 'description', 'start']),
+        )
 
     def test_export_data(self):
 
     def test_export_data(self):
-        t = Task(self.tw, description="test task",
-            project="Home",
-            due=pytz.utc.localize(datetime.datetime(2015,1,1,23,23,23)))
+        t = Task(
+            self.tw,
+            description='test task',
+            project='Home',
+            due=pytz.utc.localize(
+                datetime.datetime(2015, 1, 1, 23, 23, 23)),
+        )
 
         # Check that the output is a permutation of:
         # {"project":"Home","description":"test task","due":"20150101232323Z"}
 
         # Check that the output is a permutation of:
         # {"project":"Home","description":"test task","due":"20150101232323Z"}
@@ -836,78 +956,88 @@ class TaskFromHookTest(TasklibTest):
             for segments in itertools.permutations(allowed_segments)
         ]
 
             for segments in itertools.permutations(allowed_segments)
         ]
 
-        self.assertTrue(any(t.export_data() == expected
-                            for expected in allowed_output))
+        self.assertTrue(
+            any(t.export_data() == expected
+                for expected in allowed_output),
+        )
+
 
 class TimezoneAwareDatetimeTest(TasklibTest):
 
     def setUp(self):
         super(TimezoneAwareDatetimeTest, self).setUp()
         self.zone = local_zone
 
 class TimezoneAwareDatetimeTest(TasklibTest):
 
     def setUp(self):
         super(TimezoneAwareDatetimeTest, self).setUp()
         self.zone = local_zone
-        self.localdate_naive = datetime.datetime(2015,2,2)
-        self.localtime_naive = datetime.datetime(2015,2,2,0,0,0)
+        self.localdate_naive = datetime.datetime(2015, 2, 2)
+        self.localtime_naive = datetime.datetime(2015, 2, 2, 0, 0, 0)
         self.localtime_aware = self.zone.localize(self.localtime_naive)
         self.utctime_aware = self.localtime_aware.astimezone(pytz.utc)
 
     def test_timezone_naive_datetime_setitem(self):
         self.localtime_aware = self.zone.localize(self.localtime_naive)
         self.utctime_aware = self.localtime_aware.astimezone(pytz.utc)
 
     def test_timezone_naive_datetime_setitem(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t['due'] = self.localtime_naive
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_timezone_naive_datetime_using_init(self):
         t['due'] = self.localtime_naive
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_timezone_naive_datetime_using_init(self):
-        t = Task(self.tw, description="test task", due=self.localtime_naive)
+        t = Task(self.tw, description='test task', due=self.localtime_naive)
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_filter_by_naive_datetime(self):
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_filter_by_naive_datetime(self):
-        t = Task(self.tw, description="task1", due=self.localtime_naive)
+        t = Task(self.tw, description='task1', due=self.localtime_naive)
         t.save()
         matching_tasks = self.tw.tasks.filter(due=self.localtime_naive)
         self.assertEqual(len(matching_tasks), 1)
 
     def test_serialize_naive_datetime(self):
         t.save()
         matching_tasks = self.tw.tasks.filter(due=self.localtime_naive)
         self.assertEqual(len(matching_tasks), 1)
 
     def test_serialize_naive_datetime(self):
-        t = Task(self.tw, description="task1", due=self.localtime_naive)
-        self.assertEqual(json.loads(t.export_data())['due'],
-                         self.utctime_aware.strftime(DATE_FORMAT))
+        t = Task(self.tw, description='task1', due=self.localtime_naive)
+        self.assertEqual(
+            json.loads(t.export_data())['due'],
+            self.utctime_aware.strftime(DATE_FORMAT),
+        )
 
     def test_timezone_naive_date_setitem(self):
 
     def test_timezone_naive_date_setitem(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t['due'] = self.localdate_naive
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_timezone_naive_date_using_init(self):
         t['due'] = self.localdate_naive
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_timezone_naive_date_using_init(self):
-        t = Task(self.tw, description="test task", due=self.localdate_naive)
+        t = Task(self.tw, description='test task', due=self.localdate_naive)
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_filter_by_naive_date(self):
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_filter_by_naive_date(self):
-        t = Task(self.tw, description="task1", due=self.localdate_naive)
+        t = Task(self.tw, description='task1', due=self.localdate_naive)
         t.save()
         matching_tasks = self.tw.tasks.filter(due=self.localdate_naive)
         self.assertEqual(len(matching_tasks), 1)
 
     def test_serialize_naive_date(self):
         t.save()
         matching_tasks = self.tw.tasks.filter(due=self.localdate_naive)
         self.assertEqual(len(matching_tasks), 1)
 
     def test_serialize_naive_date(self):
-        t = Task(self.tw, description="task1", due=self.localdate_naive)
-        self.assertEqual(json.loads(t.export_data())['due'],
-                         self.utctime_aware.strftime(DATE_FORMAT))
+        t = Task(self.tw, description='task1', due=self.localdate_naive)
+        self.assertEqual(
+            json.loads(t.export_data())['due'],
+            self.utctime_aware.strftime(DATE_FORMAT),
+        )
 
     def test_timezone_aware_datetime_setitem(self):
 
     def test_timezone_aware_datetime_setitem(self):
-        t = Task(self.tw, description="test task")
+        t = Task(self.tw, description='test task')
         t['due'] = self.localtime_aware
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_timezone_aware_datetime_using_init(self):
         t['due'] = self.localtime_aware
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_timezone_aware_datetime_using_init(self):
-        t = Task(self.tw, description="test task", due=self.localtime_aware)
+        t = Task(self.tw, description='test task', due=self.localtime_aware)
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_filter_by_aware_datetime(self):
         self.assertEqual(t['due'], self.localtime_aware)
 
     def test_filter_by_aware_datetime(self):
-        t = Task(self.tw, description="task1", due=self.localtime_aware)
+        t = Task(self.tw, description='task1', due=self.localtime_aware)
         t.save()
         matching_tasks = self.tw.tasks.filter(due=self.localtime_aware)
         self.assertEqual(len(matching_tasks), 1)
 
     def test_serialize_aware_datetime(self):
         t.save()
         matching_tasks = self.tw.tasks.filter(due=self.localtime_aware)
         self.assertEqual(len(matching_tasks), 1)
 
     def test_serialize_aware_datetime(self):
-        t = Task(self.tw, description="task1", due=self.localtime_aware)
-        self.assertEqual(json.loads(t.export_data())['due'],
-                         self.utctime_aware.strftime(DATE_FORMAT))
+        t = Task(self.tw, description='task1', due=self.localtime_aware)
+        self.assertEqual(
+            json.loads(t.export_data())['due'],
+            self.utctime_aware.strftime(DATE_FORMAT),
+        )
+
 
 class DatetimeStringTest(TasklibTest):
 
 
 class DatetimeStringTest(TasklibTest):
 
@@ -920,11 +1050,11 @@ class DatetimeStringTest(TasklibTest):
             else:
                 return
 
             else:
                 return
 
-        t = Task(self.tw, description="test task", due="now")
+        t = Task(self.tw, description='test task', due='now')
         now = local_zone.localize(datetime.datetime.now())
 
         # Assert that both times are not more than 5 seconds apart
         now = local_zone.localize(datetime.datetime.now())
 
         # Assert that both times are not more than 5 seconds apart
-        if sys.version_info < (2,7):
+        if sys.version_info < (2, 7):
             self.assertTrue(total_seconds_2_6(now - t['due']) < 5)
             self.assertTrue(total_seconds_2_6(t['due'] - now) < 5)
         else:
             self.assertTrue(total_seconds_2_6(now - t['due']) < 5)
             self.assertTrue(total_seconds_2_6(t['due'] - now) < 5)
         else:
@@ -940,7 +1070,7 @@ class DatetimeStringTest(TasklibTest):
             else:
                 return
 
             else:
                 return
 
-        t = Task(self.tw, description="test task", due="eoy")
+        t = Task(self.tw, description='test task', due='eoy')
         now = local_zone.localize(datetime.datetime.now())
         eoy = local_zone.localize(datetime.datetime(
             year=now.year,
         now = local_zone.localize(datetime.datetime.now())
         eoy = local_zone.localize(datetime.datetime(
             year=now.year,
@@ -948,7 +1078,7 @@ class DatetimeStringTest(TasklibTest):
             day=31,
             hour=23,
             minute=59,
             day=31,
             hour=23,
             minute=59,
-            second=59
+            second=59,
             ))
         self.assertEqual(eoy, t['due'])
 
             ))
         self.assertEqual(eoy, t['due'])
 
@@ -961,16 +1091,18 @@ class DatetimeStringTest(TasklibTest):
             else:
                 return
 
             else:
                 return
 
-        t = Task(self.tw, description="test task", due="eoy - 4 months")
+        t = Task(self.tw, description='test task', due='eoy - 4 months')
         now = local_zone.localize(datetime.datetime.now())
         now = local_zone.localize(datetime.datetime.now())
-        due_date = local_zone.localize(datetime.datetime(
-            year=now.year,
-            month=12,
-            day=31,
-            hour=23,
-            minute=59,
-            second=59
-            )) - datetime.timedelta(0,4 * 30 * 86400)
+        due_date = local_zone.localize(
+            datetime.datetime(
+                year=now.year,
+                month=12,
+                day=31,
+                hour=23,
+                minute=59,
+                second=59,
+            )
+        ) - datetime.timedelta(0, 4 * 30 * 86400)
         self.assertEqual(due_date, t['due'])
 
     def test_filtering_with_string_datetime(self):
         self.assertEqual(due_date, t['due'])
 
     def test_filtering_with_string_datetime(self):
@@ -982,16 +1114,20 @@ class DatetimeStringTest(TasklibTest):
             else:
                 return
 
             else:
                 return
 
-        t = Task(self.tw, description="test task",
-                 due=datetime.datetime.now() - datetime.timedelta(0,2))
+        t = Task(
+            self.tw,
+            description='test task',
+            due=datetime.datetime.now() - datetime.timedelta(0, 2),
+        )
         t.save()
         t.save()
-        self.assertEqual(len(self.tw.tasks.filter(due__before="now")), 1)
+        self.assertEqual(len(self.tw.tasks.filter(due__before='now')), 1)
+
 
 class AnnotationTest(TasklibTest):
 
     def setUp(self):
         super(AnnotationTest, self).setUp()
 
 class AnnotationTest(TasklibTest):
 
     def setUp(self):
         super(AnnotationTest, self).setUp()
-        Task(self.tw, description="test task").save()
+        Task(self.tw, description='test task').save()
 
     def test_adding_annotation(self):
         task = self.tw.tasks.get()
 
     def test_adding_annotation(self):
         task = self.tw.tasks.get()
@@ -1021,20 +1157,20 @@ class AnnotationTest(TasklibTest):
         self.assertEqual(len(task['annotations']), 0)
 
     def test_annotation_after_modification(self):
         self.assertEqual(len(task['annotations']), 0)
 
     def test_annotation_after_modification(self):
-         task = self.tw.tasks.get()
-         task['project'] = 'test'
-         task.add_annotation('I should really do this task')
-         self.assertEqual(task['project'], 'test')
-         task.save()
-         self.assertEqual(task['project'], 'test')
+        task = self.tw.tasks.get()
+        task['project'] = 'test'
+        task.add_annotation('I should really do this task')
+        self.assertEqual(task['project'], 'test')
+        task.save()
+        self.assertEqual(task['project'], 'test')
 
     def test_serialize_annotations(self):
         # Test that serializing annotations is possible
 
     def test_serialize_annotations(self):
         # Test that serializing annotations is possible
-        t = Task(self.tw, description="test")
+        t = Task(self.tw, description='test')
         t.save()
 
         t.save()
 
-        t.add_annotation("annotation1")
-        t.add_annotation("annotation2")
+        t.add_annotation('annotation1')
+        t.add_annotation('annotation2')
 
         data = t._serialize('annotations', t._data['annotations'])
 
 
         data = t._serialize('annotations', t._data['annotations'])
 
@@ -1042,59 +1178,66 @@ class AnnotationTest(TasklibTest):
         self.assertEqual(type(data[0]), dict)
         self.assertEqual(type(data[1]), dict)
 
         self.assertEqual(type(data[0]), dict)
         self.assertEqual(type(data[1]), dict)
 
-        self.assertEqual(data[0]['description'], "annotation1")
-        self.assertEqual(data[1]['description'], "annotation2")
+        self.assertEqual(data[0]['description'], 'annotation1')
+        self.assertEqual(data[1]['description'], 'annotation2')
 
 
 class UnicodeTest(TasklibTest):
 
     def test_unicode_task(self):
 
 
 class UnicodeTest(TasklibTest):
 
     def test_unicode_task(self):
-        Task(self.tw, description=six.u("†åßk")).save()
+        Task(self.tw, description=six.u('†åßk')).save()
         self.tw.tasks.get()
 
     def test_filter_by_unicode_task(self):
         self.tw.tasks.get()
 
     def test_filter_by_unicode_task(self):
-        Task(self.tw, description=six.u("†åßk")).save()
-        tasks = self.tw.tasks.filter(description=six.u("†åßk"))
+        Task(self.tw, description=six.u('†åßk')).save()
+        tasks = self.tw.tasks.filter(description=six.u('†åßk'))
         self.assertEqual(len(tasks), 1)
 
     def test_non_unicode_task(self):
         self.assertEqual(len(tasks), 1)
 
     def test_non_unicode_task(self):
-        Task(self.tw, description="test task").save()
+        Task(self.tw, description='test task').save()
         self.tw.tasks.get()
 
         self.tw.tasks.get()
 
+
 class ReadOnlyDictViewTest(unittest.TestCase):
 
     def setUp(self):
 class ReadOnlyDictViewTest(unittest.TestCase):
 
     def setUp(self):
-        self.sample = dict(l=[1,2,3], d={'k':'v'})
+        self.sample = dict(sample_list=[1, 2, 3], sample_dict={'key': 'value'})
         self.original_sample = copy.deepcopy(self.sample)
         self.view = ReadOnlyDictView(self.sample)
 
     def test_readonlydictview_getitem(self):
         self.original_sample = copy.deepcopy(self.sample)
         self.view = ReadOnlyDictView(self.sample)
 
     def test_readonlydictview_getitem(self):
-        l = self.view['l']
-        self.assertEqual(l, self.sample['l'])
+        sample_list = self.view['sample_list']
+        self.assertEqual(sample_list, self.sample['sample_list'])
 
         # Assert that modification changed only copied value
 
         # Assert that modification changed only copied value
-        l.append(4)
-        self.assertNotEqual(l, self.sample['l'])
+        sample_list.append(4)
+        self.assertNotEqual(sample_list, self.sample['sample_list'])
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
 
     def test_readonlydictview_contains(self):
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
 
     def test_readonlydictview_contains(self):
-        self.assertEqual('l' in self.view, 'l' in self.sample)
-        self.assertEqual('d' in self.view, 'd' in self.sample)
-        self.assertEqual('k' in self.view, 'k' in self.sample)
+        self.assertEqual('sample_list' in self.view,
+                         'sample_list' in self.sample)
+        self.assertEqual('sample_dict' in self.view,
+                         'sample_dict' in self.sample)
+        self.assertEqual('key' in self.view, 'key' in self.sample)
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
 
     def test_readonlydictview_iter(self):
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
 
     def test_readonlydictview_iter(self):
-        self.assertEqual(list(k for k in self.view),
-                         list(k for k in self.sample))
+        self.assertEqual(
+            list(key for key in self.view),
+            list(key for key in self.sample),
+        )
 
         # Assert the view is correct after modification
         self.sample['new'] = 'value'
 
         # Assert the view is correct after modification
         self.sample['new'] = 'value'
-        self.assertEqual(list(k for k in self.view),
-                         list(k for k in self.sample))
+        self.assertEqual(
+            list(key for key in self.view),
+            list(key for key in self.sample),
+        )
 
     def test_readonlydictview_len(self):
         self.assertEqual(len(self.view), len(self.sample))
 
     def test_readonlydictview_len(self):
         self.assertEqual(len(self.view), len(self.sample))
@@ -1104,12 +1247,12 @@ class ReadOnlyDictViewTest(unittest.TestCase):
         self.assertEqual(len(self.view), len(self.sample))
 
     def test_readonlydictview_get(self):
         self.assertEqual(len(self.view), len(self.sample))
 
     def test_readonlydictview_get(self):
-        l = self.view.get('l')
-        self.assertEqual(l, self.sample.get('l'))
+        sample_list = self.view.get('sample_list')
+        self.assertEqual(sample_list, self.sample.get('sample_list'))
 
         # Assert that modification changed only copied value
 
         # Assert that modification changed only copied value
-        l.append(4)
-        self.assertNotEqual(l, self.sample.get('l'))
+        sample_list.append(4)
+        self.assertNotEqual(sample_list, self.sample.get('sample_list'))
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
@@ -1140,7 +1283,7 @@ class LazyUUIDTaskTest(TasklibTest):
     def setUp(self):
         super(LazyUUIDTaskTest, self).setUp()
 
     def setUp(self):
         super(LazyUUIDTaskTest, self).setUp()
 
-        self.stored = Task(self.tw, description="this is test task")
+        self.stored = Task(self.tw, description='this is test task')
         self.stored.save()
 
         self.lazy = LazyUUIDTask(self.tw, self.stored['uuid'])
         self.stored.save()
 
         self.lazy = LazyUUIDTask(self.tw, self.stored['uuid'])
@@ -1165,6 +1308,7 @@ class LazyUUIDTaskTest(TasklibTest):
 
     def test_normal_to_lazy_equality(self):
         assert self.stored == self.lazy
 
     def test_normal_to_lazy_equality(self):
         assert self.stored == self.lazy
+        assert not self.stored != self.lazy
         assert type(self.lazy) is LazyUUIDTask
 
     def test_lazy_to_lazy_equality(self):
         assert type(self.lazy) is LazyUUIDTask
 
     def test_lazy_to_lazy_equality(self):
@@ -1172,6 +1316,31 @@ class LazyUUIDTaskTest(TasklibTest):
         lazy2 = LazyUUIDTask(self.tw, self.stored['uuid'])
 
         assert lazy1 == lazy2
         lazy2 = LazyUUIDTask(self.tw, self.stored['uuid'])
 
         assert lazy1 == lazy2
+        assert not lazy1 != lazy2
+        assert type(lazy1) is LazyUUIDTask
+        assert type(lazy2) is LazyUUIDTask
+
+    def test_normal_to_lazy_inequality(self):
+        # Create a different UUID by changing the last letter
+        wrong_uuid = self.stored['uuid']
+        wrong_uuid = wrong_uuid[:-1] + ('a' if wrong_uuid[-1] != 'a' else 'b')
+
+        wrong_lazy = LazyUUIDTask(self.tw, wrong_uuid)
+
+        assert not self.stored == wrong_lazy
+        assert self.stored != wrong_lazy
+        assert type(wrong_lazy) is LazyUUIDTask
+
+    def test_lazy_to_lazy_inequality(self):
+        # Create a different UUID by changing the last letter
+        wrong_uuid = self.stored['uuid']
+        wrong_uuid = wrong_uuid[:-1] + ('a' if wrong_uuid[-1] != 'a' else 'b')
+
+        lazy1 = LazyUUIDTask(self.tw, self.stored['uuid'])
+        lazy2 = LazyUUIDTask(self.tw, wrong_uuid)
+
+        assert not lazy1 == lazy2
+        assert lazy1 != lazy2
         assert type(lazy1) is LazyUUIDTask
         assert type(lazy2) is LazyUUIDTask
 
         assert type(lazy1) is LazyUUIDTask
         assert type(lazy2) is LazyUUIDTask
 
@@ -1196,9 +1365,9 @@ class LazyUUIDTaskSetTest(TasklibTest):
     def setUp(self):
         super(LazyUUIDTaskSetTest, self).setUp()
 
     def setUp(self):
         super(LazyUUIDTaskSetTest, self).setUp()
 
-        self.task1 = Task(self.tw, description="task 1")
-        self.task2 = Task(self.tw, description="task 2")
-        self.task3 = Task(self.tw, description="task 3")
+        self.task1 = Task(self.tw, description='task 1')
+        self.task2 = Task(self.tw, description='task 2')
+        self.task3 = Task(self.tw, description='task 3')
 
         self.task1.save()
         self.task2.save()
 
         self.task1.save()
         self.task2.save()
@@ -1207,7 +1376,7 @@ class LazyUUIDTaskSetTest(TasklibTest):
         self.uuids = (
             self.task1['uuid'],
             self.task2['uuid'],
         self.uuids = (
             self.task1['uuid'],
             self.task2['uuid'],
-            self.task3['uuid']
+            self.task3['uuid'],
         )
 
         self.lazy = LazyUUIDTaskSet(self.tw, self.uuids)
         )
 
         self.lazy = LazyUUIDTaskSet(self.tw, self.uuids)
@@ -1239,7 +1408,7 @@ class LazyUUIDTaskSetTest(TasklibTest):
         taskset = set([self.task1])
         lazyset = LazyUUIDTaskSet(
             self.tw,
         taskset = set([self.task1])
         lazyset = LazyUUIDTaskSet(
             self.tw,
-            (self.task2['uuid'], self.task3['uuid'])
+            (self.task2['uuid'], self.task3['uuid']),
         )
 
         assert taskset | lazyset == self.lazy
         )
 
         assert taskset | lazyset == self.lazy
@@ -1254,7 +1423,7 @@ class LazyUUIDTaskSetTest(TasklibTest):
         taskset = set([self.task1, self.task2])
         lazyset = LazyUUIDTaskSet(
             self.tw,
         taskset = set([self.task1, self.task2])
         lazyset = LazyUUIDTaskSet(
             self.tw,
-            (self.task2['uuid'], self.task3['uuid'])
+            (self.task2['uuid'], self.task3['uuid']),
         )
 
         assert taskset - lazyset == set([self.task1])
         )
 
         assert taskset - lazyset == set([self.task1])
@@ -1269,13 +1438,19 @@ class LazyUUIDTaskSetTest(TasklibTest):
         taskset = set([self.task1, self.task2])
         lazyset = LazyUUIDTaskSet(
             self.tw,
         taskset = set([self.task1, self.task2])
         lazyset = LazyUUIDTaskSet(
             self.tw,
-            (self.task2['uuid'], self.task3['uuid'])
+            (self.task2['uuid'], self.task3['uuid']),
         )
 
         assert taskset ^ lazyset == set([self.task1, self.task3])
         assert lazyset ^ taskset == set([self.task1, self.task3])
         )
 
         assert taskset ^ lazyset == set([self.task1, self.task3])
         assert lazyset ^ taskset == set([self.task1, self.task3])
-        assert taskset.symmetric_difference(lazyset) == set([self.task1, self.task3])
-        assert lazyset.symmetric_difference(taskset) == set([self.task1, self.task3])
+        self.assertEqual(
+            taskset.symmetric_difference(lazyset),
+            set([self.task1, self.task3]),
+        )
+        self.assertEqual(
+            lazyset.symmetric_difference(taskset),
+            set([self.task1, self.task3]),
+        )
 
         lazyset ^= taskset
         assert lazyset == set([self.task1, self.task3])
 
         lazyset ^= taskset
         assert lazyset == set([self.task1, self.task3])
@@ -1284,7 +1459,7 @@ class LazyUUIDTaskSetTest(TasklibTest):
         taskset = set([self.task1, self.task2])
         lazyset = LazyUUIDTaskSet(
             self.tw,
         taskset = set([self.task1, self.task2])
         lazyset = LazyUUIDTaskSet(
             self.tw,
-            (self.task2['uuid'], self.task3['uuid'])
+            (self.task2['uuid'], self.task3['uuid']),
         )
 
         assert taskset & lazyset == set([self.task2])
         )
 
         assert taskset & lazyset == set([self.task2])
@@ -1299,5 +1474,6 @@ class LazyUUIDTaskSetTest(TasklibTest):
 class TaskWarriorBackendTest(TasklibTest):
 
     def test_config(self):
 class TaskWarriorBackendTest(TasklibTest):
 
     def test_config(self):
-        assert self.tw.config['nag'] == "You have more urgent tasks."
-        assert self.tw.config['debug'] == "no"
+        assert self.tw.config['nag'] == 'You have more urgent tasks.'
+        assert self.tw.config['default.command'] == 'next'
+        assert self.tw.config['dependency.indicator'] == 'D'